<template>
    <div class="person">
        <h1>情况三：监视【reactive】定义的【对象类型】数据</h1>
        <h2>姓名：{{ person.name }}</h2>
        <h2>年龄：{{ person.age }}</h2>
        <button @click="changeName">修改名字</button>
        <button @click="changeAge">修改年龄</button>
        <button @click="changePerson">修改整个人</button>
        <hr>
        <h2>测试：{{ obj.a.b.c }}</h2>
        <button @click="test">修改obj.a.b.c</button>
    </div>
</template>

<script lang="ts" setup name="Person">
import { reactive, watch } from 'vue';

let person = reactive({
    name: '张三',
    age: 98
})
let obj = reactive({
    a: {
        b: {
            c: 666
        }
    }
})
const changeName = () => {
    person.name += '~'
}
const changeAge = () => {
    person.age += 1
}
const changePerson = () => {
    Object.assign(person, { name: '吊毛', age: 97 })
}
function test() {
    obj.a.b.c++
}
// 监视，情况三：监视【reactive】定义的【对象类型】数据，且默认是开启深度监视的
watch(person, (newValue, oldValue) => {
    console.log('person变化了', newValue, oldValue)
})
watch(obj,(newValue, oldValue)=>{
    console.log('obj变化了', newValue, oldValue)
})
</script>

<style scoped>
.person {
    background-color: skyblue;
    box-shadow: 0 0 10px;
    border-radius: 10px;
    padding: 20px;
}

button {
    margin: 0 5px;
}

li {
    font-size: 20px;
}
</style>